what would make a yfz450 backfire at hi rpm. also what could make a raptor 660 make a noise in the tranny when it is about to stall. when it makes the noise the reverse light flickers
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what would make a yfz450 backfire at hi rpm. also what could make a raptor 660 make a noise in the tranny when it is about to stall. when it makes the noise the reverse light flickers
try adjusting the air/fuel mixture ratio. My trx450r had the same problem and that fixed it.